DA9333.001
29 January 2004
MAS9333
150 mA LDO Voltage Regulator IC
This is preliminary information on a
new product under development.
Micro Analog Systems reserves the
right to make any changes without
notice.
•
High PSRR still when V
IN
is only
V
OUT(NOM)
+ 0.5 V
•
Low Noise, 40 µVrms, without
External Bypass Capacitor
•
Fast Start-up Time: 21 µs
•
Low Dropout: 124 mV @ 150 mA
•
Low Minimum Output Capacitance
Requirement: 0.23 µF
•
Stable with Low-ESR Output
Capacitors
DESCRIPTION
MAS9333 is a low dropout voltage regulator, which
offers good performance even at low V
IN
voltage.
The output noise level of MAS9333 is 40 µVrms
without an external bypass capacitor. MAS9333
features very fast start-up time (typically only 21 µs
from start-up to within ±1% of V
OUT(NOM)
) and low
dropout voltage ( 124 mV typical at 150 mA). Also it
has a ripple rejection ability of 53 dB at 10 kHz
even when V
IN
= V
OUT(NOM)
+ 0.5 V.
The very short start-up time of MAS9333 combined
with good performance offers an opportunity to
switch the regulator off and on even in timing critical
and/or noise sensitive applications.
The Equivalent Series Resistance (ESR) range of
output capacitors that can be used with MAS9333
is very wide. This ESR range from a few mΩ up to a
couple of Ohms combined with no minimum output
current requirement makes the usage of MAS9333
easier and low in cost.
In order to save power the regulator goes into sleep
mode when it is disabled. MAS9333 also includes
an auto-discharge function, wherein a shutdown
transistor turns on and discharges the output
capacitor when MAS9333 is disabled.
An internal thermal protection circuit prevents the
device from overheating. Also the maximum output
current is internally limited.
FEATURES
•
Good Performance at Low V
IN
Voltage
•
Pin Compatible with LP2985/LP3985
•
Integrated Bypass Capacitor
•
Auto-discharge Function
•
Internal Thermal Shutdown
•
Short Circuit Protection
•
TSOT 5 or WL-CSP Package
•
Several Output Voltage Options Available,
see Ordering Information p.10
APPLICATIONS
•
Cellular Phones
•
Cordless Phones
•
Accessories
•
Wireless Systems
•
Battery Powered Systems
•
Portable Systems
•
Radio Control Systems
•
Low Voltage Systems
1 (11)
DA9333.001
29 January 2004
PIN CONFIGURATION
TSOT 5
Top View
VOUT
5
33AX
1
2
3
4
N/C
VIN GND CTRL
For top marking information see
ordering information p. 10
WL-CSP
A1
A3
B2
C3
C3
C1
BOTTOM VIEW
A3
A1
Pin A1 Designator
TOP VIEW
B2
For top marking information see
ordering information p. 10
PIN DESCRIPTION
Pin Name
Pin Number
in TSOT-5
Pin Number in
WL-CSP
Pin Order 11
Note 1
Pin Number in
WL-CSP
Pin Order 12
Note 2
Type
Function
VIN
GND
CTRL
N/C
VOUT
1
2
3
4
5
C3
B2
A1
A3
C1
C3
A1
A3
B2
C1
P
G
I
-
O
Power Supply Voltage
Ground
Enable/Disable Pin for Regulator
Not Connected
Output
G = Ground, I = Input, O = Output, P = Power
Note 1:
WL-CSP Pin Order 11 is pin compatible with LP3985.
Note 2:
WL-CSP Pin Order 12 is pin compatible with LP2985.
33XY
2 (11)
C1
DA9333.001
29 January 2004
BLOCK DIAGRAM
VIN
CTRL
OVER CURRENT /
OVER TEMPERATURE
PROTECTION
VOLTAGE
REFERENCE
+
SHUT-
DOWN
VOUT
GND
ABSOLUTE MAXIMUM RATINGS
All voltages with respect to ground
Parameter
Supply Voltage
Voltage Range for All Pins
ESD Rating
Junction Temperature
Storage Temperature
Symbol
V
IN
Conditions
Min
-0.3
-0.3
Max
6
V
IN
+ 0.3
2
+175
(limited)
Unit
V
V
kV
°C
°C
HBM
T
Jmax
T
S
-55
+150
Stresses beyond those listed may cause permanent damage to the device. The device may not operate under these conditions, but it will
not be destroyed.
RECOMMENDED OPERATING CONDITIONS
All voltages with respect to ground
Parameter
Operating Junction
Temperature
Operating Ambient
Temperature
Operating Supply Voltage
Symbol
T
J
T
A
V
IN
Conditions
Min
-40
-40
V
OUT(NOM)
+ 0.3
Max
+125
+85
5.3
Unit
°C
°C
V
ELECTRICAL CHARACTERISTICS
◆
Thermal Protection
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Threshold High
Threshold Low
Symbol
T
H
T
L
Conditions
Min
145
135
Typ
160
150
Max
175
165
Unit
°C
°C
The hysteresis of 10°C prevents the device from turning on too soon after thermal shut-down.
3 (11)
DA9333.001
29 January 2004
◆
Control Terminal Specifications
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Control Voltage
OFF State
ON State
Control Current
Symbol
V
CTRL
I
CTRL
Conditions
Min
−0.3
1.2
Typ
Max
0.55
V
IN
+ 0.3
10
1
Unit
V
V
CTRL
= V
IN
V
CTRL
= 0 V
4
0
µA
If CTRL-pin is not connected, MAS9333 is in OFF state (900 kΩ pull-down resistor to ground).
◆
Voltage Parameters
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Output Voltage
Tolerance
Dropout Voltage
Symbol
V
OUT
V
DROP
Conditions
V
IN
≥
3.05 V, V
OUT(NOM)
= 2.85 V, I
OUT
= 10 mA
I
OUT
= 1 mA
I
OUT
= 75 mA
I
OUT
= 150 mA
Min
V
OUT(NOM)
−
2 %
Typ
Max
V
OUT(NOM)
+ 2 %
Unit
V
mV
TBD
TBD
124
◆
Current Parameters
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Continuous Output Current
Short Circuit Current
Peak Output Current
Ground Pin Current
Symbol
I
OUT
I
MAX
I
PK
I
GND
Conditions
Min
Typ
150
Max
Unit
mA
mA
mA
µA
R
L
= 0
Ω
V
OUT
> 95%* V
OUT(NOM)
V
CTRL
= 2 V
I
OUT
= 0 mA
I
OUT
= 10 mA
I
OUT
= 50 mA
I
OUT
= 150 mA
V
CTRL
= 0 V
T
A
= + 27°C
T
A
= + 85°C
450
410
120
TBD
TBD
220
0.02
0.2
200
400
Ground Pin Current, Sleep
Mode
I
GND
µA
Power Dissipation
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Thermal Resistance
(Junction to Air)
Symbol
R
JA
Conditions
TSOT-5 package,
thermal test board according
to JESD51-7 (4 layers)
WL-CSP package,
mounted on MAS CSP
evaluation board
any ambient temperature
Min
Typ
207
210
Max
Unit
°C/W
Maximum Power Dissipation
P
d
P
d MAX
=
Note 1
T
J (MAX)
−
T
A
R
JA
W
Note 1:
T
J(MAX)
denotes maximum operating junction temperature (+125°C), T
A
ambient temperature, and R
JA
junction-to-air thermal
resistance specified above.
4 (11)
DA9333.001
29 January 2004
Line and Load Regulation
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Line Regulation
Load Regulation
Symbol
Conditions
V
OUT(NOM)
+ 0.5 V < V
IN
< 5.3 V,
I
OUT
= 150 mA
I
OUT
= 1 to 10 mA
I
OUT
= 1 to 150 mA
Min
-0.3
Typ
Max
0.3
Unit
%
mV
0.5
9
Noise and Ripple Rejection
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 150 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Output Noise Voltage
Noise Density
PSRR
Symbol
V
RMS
V
N
Conditions
100Hz < f < 100kHz
I
OUT
= 50 mA,
f = 1 kHz
f = 1 kHz
f = 10 kHz
f = 100 kHz
Min
Typ
40
480
60
53
40
Max
Unit
µVrms
nV
Hz
dB
Dynamic Parameters
T
A
= -40°C to +85°C, typical values at T
A
= +27°C, V
IN
= V
OUT(NOM)
+ 0.5 V (or min 3.3 V), I
OUT
= 1.0 mA, C
IN
= 0.47 µF, C
L
= 0.47 µF,
V
CTRL
= 2 V, unless otherwise specified
Parameter
Rise Time (10%…90%)
Overshoot
Start-up Time
(settling time of voltage
transient from start-up to
within
±1%
of V
OUT(NOM)
)
Symbol
Conditions
V
CTRL
= 0 to 2 V, I
OUT
= 30 mA
V
CTRL
= 0 to 2 V
V
CTRL
= 0 to 2 V
(see figure 1 below)
Min
Typ
14
1.2
21
Max
Unit
µs
10
%
µs
50%
CTRL
overshoot
90%
Figure1.
Definitions of
rise time, overshoot
and start-up time.
VOUT
10%
rise time
start-up time
5 (11)
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
